diff options
| -rw-r--r-- | arch/arm/common/bL_switcher.c | 16 | ||||
| -rw-r--r-- | include/linux/clockchips.h | 6 | ||||
| -rw-r--r-- | include/linux/tick.h | 19 | ||||
| -rw-r--r-- | kernel/time/tick-common.c | 2 | ||||
| -rw-r--r-- | kernel/time/tick-internal.h | 5 | ||||
| -rw-r--r-- | kernel/time/tick-sched.h | 10 |
6 files changed, 22 insertions, 36 deletions
diff --git a/arch/arm/common/bL_switcher.c b/arch/arm/common/bL_switcher.c index d4f970a..37dc0fe 100644 --- a/arch/arm/common/bL_switcher.c +++ b/arch/arm/common/bL_switcher.c @@ -151,8 +151,6 @@ static int bL_switch_to(unsigned int new_cluster_id) unsigned int mpidr, this_cpu, that_cpu; unsigned int ob_mpidr, ob_cpu, ob_cluster, ib_mpidr, ib_cpu, ib_cluster; struct completion inbound_alive; - struct tick_device *tdev; - enum clock_event_state tdev_state; long volatile *handshake_ptr; int ipi_nr, ret; @@ -219,13 +217,7 @@ static int bL_switch_to(unsigned int new_cluster_id) /* redirect GIC's SGIs to our counterpart */ gic_migrate_target(bL_gic_id[ib_cpu][ib_cluster]); - tdev = tick_get_device(this_cpu); - if (tdev && !cpumask_equal(tdev->evtdev->cpumask, cpumask_of(this_cpu))) - tdev = NULL; - if (tdev) { - tdev_state = tdev->evtdev->state; - clockevents_set_state(tdev->evtdev, CLOCK_EVT_STATE_SHUTDOWN); - } + tick_suspend_local(); ret = cpu_pm_enter(); @@ -251,11 +243,7 @@ static int bL_switch_to(unsigned int new_cluster_id) ret = cpu_pm_exit(); - if (tdev) { - clockevents_set_state(tdev->evtdev, tdev_state); - clockevents_program_event(tdev->evtdev, - tdev->evtdev->next_event, 1); - } + tick_resume_local(); trace_cpu_migrate_finish(ktime_get_real_ns(), ib_mpidr); local_fiq_enable(); diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index 50ce975..3ac7e2d 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -198,12 +198,6 @@ clockevents_calc_mult_shift(struct clock_event_device *ce, u32 freq, u32 minsec) freq, minsec); } -/* Should be core only, but is abused by arm bl_switcher */ -extern void clockevents_set_state(struct clock_event_device *dev, - enum clock_event_state state); -extern int clockevents_program_event(struct clock_event_device *dev, - ktime_t expires, bool force); - extern void clockevents_suspend(void); extern void clockevents_resume(void); diff --git a/include/linux/tick.h b/include/linux/tick.h index a3d4d28..589868b 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -11,30 +11,19 @@ #include <linux/cpumask.h> #include <linux/sched.h> -/* ARM BL switcher abuse support */ -#ifdef CONFIG_GENERIC_CLOCKEVENTS -enum tick_device_mode { - TICKDEV_MODE_PERIODIC, - TICKDEV_MODE_ONESHOT, -}; - -struct tick_device { - struct clock_event_device *evtdev; - enum tick_device_mode mode; -}; -extern struct tick_device *tick_get_device(int cpu); -#endif - #ifdef CONFIG_GENERIC_CLOCKEVENTS extern void __init tick_init(void); extern void tick_freeze(void); extern void tick_unfreeze(void); -/* Should be core only, but XEN resume magic requires this */ +/* Should be core only, but ARM BL switcher requires it */ +extern void tick_suspend_local(void); +/* Should be core only, but XEN resume magic and ARM BL switcher require it */ extern void tick_resume_local(void); #else /* CONFIG_GENERIC_CLOCKEVENTS */ static inline void tick_init(void) { } static inline void tick_freeze(void) { } static inline void tick_unfreeze(void) { } +static inline void tick_suspend_local(void) { } static inline void tick_resume_local(void) { } #endif /* !CONFIG_GENERIC_CLOCKEVENTS */ diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c index da796d6..e28ba5c 100644 --- a/kernel/time/tick-common.c +++ b/kernel/time/tick-common.c @@ -380,7 +380,7 @@ void tick_shutdown(unsigned int *cpup) * * No locks required. Nothing can change the per cpu device. */ -static void tick_suspend_local(void) +void tick_suspend_local(void) { struct tick_device *td = this_cpu_ptr(&tick_cpu_device); diff --git a/kernel/time/tick-internal.h b/kernel/time/tick-internal.h index 6ba7bce..5fc2daf 100644 --- a/kernel/time/tick-internal.h +++ b/kernel/time/tick-internal.h @@ -28,6 +28,7 @@ extern bool tick_check_replacement(struct clock_event_device *curdev, struct clock_event_device *newdev); extern void tick_install_replacement(struct clock_event_device *dev); extern int tick_is_oneshot_available(void); +extern struct tick_device *tick_get_device(int cpu); extern int clockevents_tick_resume(struct clock_event_device *dev); /* Check, if the device is functional or a dummy for broadcast */ @@ -39,6 +40,10 @@ static inline int tick_device_is_functional(struct clock_event_device *dev) extern void clockevents_shutdown(struct clock_event_device *dev); extern void clockevents_exchange_device(struct clock_event_device *old, struct clock_event_device *new); +extern void clockevents_set_state(struct clock_event_device *dev, + enum clock_event_state state); +extern int clockevents_program_event(struct clock_event_device *dev, + ktime_t expires, bool force); extern void clockevents_handle_noop(struct clock_event_device *dev); extern int __clockevents_update_freq(struct clock_event_device *dev, u32 freq); extern ssize_t sysfs_get_uname(const char *buf, char *dst, size_t cnt); diff --git a/kernel/time/tick-sched.h b/kernel/time/tick-sched.h index 9307432..28b5da3 100644 --- a/kernel/time/tick-sched.h +++ b/kernel/time/tick-sched.h @@ -3,6 +3,16 @@ #include <linux/hrtimer.h> +enum tick_device_mode { + TICKDEV_MODE_PERIODIC, + TICKDEV_MODE_ONESHOT, +}; + +struct tick_device { + struct clock_event_device *evtdev; + enum tick_device_mode mode; +}; + enum tick_nohz_mode { NOHZ_MODE_INACTIVE, NOHZ_MODE_LOWRES, |
